In 2002, CHI was certified ISO9001:2000 Quality System by UL
In 2003, CHI was certified ISO14001:2004 Environment System by UL
In 2007, CHI was certified ISO/TS16949:2002 Quality System
In 2009, CHI got ISO/TS16949:2009 updated
In 2009, CHI was certified ISO9001:2008 Quality System by UC
In 2015, CHI was certified ISO9001:2008 & ISO14001:2008 by UL DQS

In 2018, CHI was certified updated version of ISO9001:2015 & ISO14001:2015 by UL DQS